blob: 35611cce77aa82de425d46a3e5c8776cd27645f5 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
/*
* Copyright (C) 2012 Stefan Roese <sr@denx.de>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <common.h>
#include <spl.h>
DECLARE_GLOBAL_DATA_PTR;
/*
* Needed to align size SPL image to a 4-byte length
*/
u32 end_align __attribute__ ((section(".end_align")));
/*
* Return selected boot device. On MPC5200 its only NOR flash right now.
*/
u32 spl_boot_device(void)
{
return BOOT_DEVICE_NOR;
}
/*
* SPL version of board_init_f()
*/
void board_init_f(ulong bootflag)
{
end_align = (u32)__spl_flash_end;
/*
* On MPC5200, the initial RAM (and gd) is located in the internal
* SRAM. So we can actually call the preloader console init code
* before calling initdram(). This makes serial output (printf)
* available very early, even before SDRAM init, which has been
* an U-Boot priciple from day 1.
*/
/*
* Init global_data pointer. Has to be done before calling
* get_clocks(), as it stores some clock values into gd needed
* later on in the serial driver.
*/
/* Pointer is writable since we allocated a register for it */
gd = (gd_t *)(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET);
/* Clear initial global data */
memset((void *)gd, 0, sizeof(gd_t));
/*
* get_clocks() needs to be called so that the serial driver
* works correctly
*/
get_clocks();
/*
* Do rudimental console / serial setup
*/
preloader_console_init();
/*
* First we need to initialize the SDRAM, so that the real
* U-Boot or the OS (Linux) can be loaded
*/
initdram(0);
/* Clear bss */
memset(__bss_start, '\0', __bss_end - __bss_start);
/*
* Call board_init_r() (SPL framework version) to load and boot
* real U-Boot or OS
*/
board_init_r(NULL, 0);
/* Does not return!!! */
}
|
